block: make scsi_request and scsi ioctl support optional
We only need this code to support scsi, ide, cciss and virtio. And at
least for virtio it's a deprecated feature to start with.
This should shrink the kernel size for embedded device that only use,
say eMMC a bit.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/Kconfig b/block/Kconfig
index 7f659b2..b97d7f6 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -49,9 +49,13 @@
If unsure, say Y.
+config BLK_SCSI_REQUEST
+ bool
+
config BLK_DEV_BSG
bool "Block layer SG support v4"
default y
+ select BLK_SCSI_REQUEST
help
Saying Y here will enable generic SG (SCSI generic) v4 support
for any block device.
@@ -71,6 +75,7 @@
bool "Block layer SG support v4 helper lib"
default n
select BLK_DEV_BSG
+ select BLK_SCSI_REQUEST
help
Subsystems will normally enable this if needed. Users will not
normally need to manually enable this.